CP2114-GM Ver la hoja de datos (PDF) - Silicon Laboratories
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CP2114-GM Datasheet PDF : 44 Pages
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CP2114
Table 10. Analog Output/Input Characteristics (CS42L55 daughtercard)
25 °C, bus-powered, USB synchronization mode: asynchronous, digital audio interface mode: I2S, DAC/ADC gains set to 0 dB,
test signal for analog output: uncompressed WAV file, full-scale sine wave at 997 Hz, measurement bandwidth 20 Hz to 20 kHz
Additional parameters that apply to this table are as follows:
VA = VCP = VLDO = 2.5 V
Internal oscillator mode
Parameter
Test Condition
Min Typ Max Unit
Analog Output (Line Output)
THD + Noise
0 dB input
–20 dB input
–60 dB input
— –80 — dB
— –91 — dB
— –91 — dB
Dynamic Range
A-weighted
—
92
—
dB
Noise Level
Output muted
— –112 — dB
Frequency response
20 Hz – 20 kHz
— +0.03, — dB
–0.07
Analog Input
THD + Noise
–1 dB input
–20 dB input
–60 dB input
— –85 — dB
— –87 — dB
— –87 — dB
Dynamic Range
A-weighted
—
90
—
dB
Noise Level
Analog input locally muted
—
0*
—
dB
*Note: When analog input is locally muted, the CP2114 transmits sample values of 0 to the host.
Table 11. Analog Output Characteristics (WM8523 daughtercard)
25 °C, bus-powered, USB synchronization mode: asynchronous, digital audio interface mode: I2S, DAC/ADC gains set to 0 dB,
test signal for analog output: uncompressed WAV file, full-scale sine wave at 997 Hz, measurement bandwidth 20 Hz to 20 kHz
Additional parameters that apply to this table are as follows:
LINEVDD = AVDD = 3.3 V
Internal oscillator mode
External headphone amplifier disconnected, no lowpass filter on LINEVOUTL/LINEVOUTR
Parameter
THD + Noise
Dynamic Range
Test Condition
0 dB FS input
–20 dB FS input
–60 dB FS input
A-weighted
Min Typ Max Unit
— –83 — dB
— –91 — dB
— –91 — dB
—
94
—
dB
Noise Level
Frequency response
Output muted
20 Hz – 20 kHz
— –99 — dB
— +0.04, — dB
–0.05
Rev. 1.1
9
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